Letters to two friends, 1926-1952 /
Teilhard de Chardin, Pierre.
Weaver, Helen,1931-
London Rapp & Whiting
1970
This translation originally published, New York: New American Library, 1968. Originally published as 'Accomplir l'homme lettres inédites, 1926-1952'. Paris: Éditions Bernard Grasset, 1968